Arc-lamp.



E. M. WOODEN. ARG LAMP. APPLICATION FILED SEPT. 7, 1911.

1,049,555. v Patented .1511.119131 3 SHEETS-SHEET 2.

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ARG LAMP.

.APPLIUATION FILED SEPTJ, 1911.

Patented Jan. '7, 1913.

3 SHEETS-SHEBT 3.

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'rATENToFFion or oNEJrriInn rro ANTHONY B.

` iriin sTATEs 0F NEW YORK, N. Y., ASSIGNOR Anc-LAMP.

Patented J an. *7, 1913.

semi No. 648,210.

Specification of Letters Patent. Application filed September 7, 1911.

the slide 4.. The adjusting screw 5 may be mounted in the standard 2 which may have a flange portion 5a bearing in an annular recess 5*J to prevent longitudinal movement of the screw .5, as indicated in Fig. 1. On kthe upper side of the slide 4 the upper ybracket 7 is mounted and between these brackets a vertical spindle 8 is mounted, the up with To all whom it may concern:

Be it known that I, FAnmi M. WOODEN, a citizen .of the United States, residing in the borough of Manhattan of the city of 'New York and State of New York, have invented certain new andvuseful Improvements in Arc-Lamps, of which the. followin is a specification, reference being had to the accompanying drawings, which form a part hereof.

This invention relates to arc lamps and particularly to lamps of this type which are used in connection with moving picture machines.

The principal object of the invention is to provide a lamp having improved means for supporting the electrodes or carbons and for adjusting them into any desired osition.

A further object of the invention is, to

provide means that the arcV per end of which spindle -is formed threads so that its upper extremity forms a vertical adjusting screw This adjusting screw 9 passes through thehorizontal ear 10 on the sweep 11 and the lower end of this sweep is provided with a lower horizontal ear 12 which is mounted to tudinally on a the upper sid 13 has a longitudinal key 111 fitting the ear 12 so that when the sleeve is rotated on the axis of the spindle, the sweep may be swung desired. The sleeve at .its lower end which is dto for insuring will be maintained at al substantially fixed point.

, d on rotating the ad-v the invention will be l forth in' the following 'delan adjusting of an apparatus embodying my in- ,justing stem 18 by vention which consists in the new and novel \19, the sleeve 13 can be rotatedso as to features of construction and swing the sweep 11 around and may be parts hereinafter set forth andclaimled. clamped in any position by a clamping In the drawings,'Figure 1 is a side elescrew 20 engaging the edge of vation of a-n arc lamp constructed according 15. In order to adjust the sweep vertically, to my invention, the frame plate thereof the adjusting screw 9 may be rotated by the being shown in vertical section. Fig. 2 is a bevel gear 21, which is att-ached to it and vertical section through a portion of the which engages with the bevel pinion'22 on frame of the machine, certain parts being the stem 23, carrying a hand wheel 2,4 as broken away or omitted. Fig. 3 is a horishown. zontal cross section taken on of Fig; 1 upon an enlarged scale and illustrating means for adjusting the upper electrodes. Fig.

In order to mount fthe electrodes, I provide the outer face of the sweep guide 25 through which racks 26 and 27 slide vertically. Therack 26 is formed at its upper end into a head 27 having a short horizontal arm 28 with two pair of links 29 which -suspend a block 30. This block maybe adjusted outwardly from the rack by an adjusting screw 31 which is threaded in a socket 32, the point of the'screw resting against the block 30. FA spring 33 holds the block against the end of the screw. As in dicated in Fig. 3, the block 30 has a pair o forks 34 between which a horizontal shaft 35 passes, said shaft being insulated and provided with a rigid l 36.

4 is a vert-ical section taken on the line 4r-11 of Fig. 3 and illustrating the the upper electrode. 5 is ahorizontal section taken on the L14 of Fig. 1 and illustrating the means adjusting the lower elec- 6 is a fragmentary view in secfrom the right to-ward the guard plate of the lamp and showing a suitable manner `of extending a movable operating spindle through the same.

Upon the frame 1, comprising standards 2 and horizontal guide bars 3, a movable slide or carriage 4 is mounted. This slide is adjusted along the guide bars 3 by means of an adjusting screw 5 which is threaded through a bracket 6 extending down from Fig. line for clamping or tion looking the flange- 11 with a,V

slide longimeans of the hand wheel the holder 43 comprising `to permit the vertical which attaches it to hand 42, evidently the worm wheel can be rotated and this adjusts an elect-rode holder 43 rigid with the worm wheel, which presents fixed jaws 44; a movable .clamping jaw 45 operated by the clamping screw 46 clamps the as shown. The rack 27 extends downwardly and is rigid with an arm 48 which extends out under the arm 28 and this arm has two forks 49, as shown in Fig. 5, between which the lower electrode holder 50 to a horizontal adjusting screw 52 mounted in the forks 49. Between the forks 49 a horizontal guide groove 53 is formed which receives the end of the shank 51 so as to support the holder against gravity.

By rotating the adjusting screw 59, the position of the holder can be adjusted in a horizontal direction between the forks 49. The holder 50 is similar in construction to fixed jaws 54 and a coperating movable jaw 55 actuated by ductors and 61 which carry the current to or from the electrodes.

As the electrodes become consumed they be fed toward each other by means 0f coperatie with two pinions 62 and 63, said pinions being rigidly mounted on a horizontal stub shaft 64 passing through the sweep 11 and the guide 25. The stub shaft 64 may be rotated gears 65 and 66, the latter the upper electrode. This arrangement is adopted in order to compensate for the consumption in the upper electrode which is usually twice as fast as the lower.

The stems referred to above all pass through a vertical guard plate 72;

in order movement of the stem 31with the rack 26, a vertical slot 72a is formed in the plate; and in order to enable the stem 4l to rock at the point Where it passes through the plate when the upper holder 43 is adjusted, I let the stem 41 slide through a round block 73, the ends of which are formed into gudgeons 74 rotatably mounted in ears 75 formed on the plate as shown in dotted lines in Fig. 1; and this block is set in an opening 76 in the plate.

In order to hold the racks26 and 27 apart, assist in guiding them, I provide a center plate 77 to which the rack 26 is attached, and on the upper side of the guide 26 a vertically extending guide bar 78 is provided, as shown in Fig. 2.

lVith the construction described, it will be evident that by rotating the adjusting screw 5, the slide or carriage 4 may be adjusted in any desired position along the guide bars 3. By rotating the hand wheel 24, the sweep ll may be raised or lowered so as to elevate or depress the lighted point or arc. By rotating the hand wheel 19, the sweep 11 can be adjusted around in an arc on the spindle 8 as an axis. The adjusting screw 31 enables the upper electrode holder to be adjusted outwardly and upwardly and lthe hand wheel 42 enables the angle of the pin or shaft the electrodes may be fedJ toward each other at the proper speed to maintain the arc at a fixed point. Through the medium of the adjusting screw 52, the lower electrode holder may be adjusted horizontally.

I claim as my invention:

rotation, said sweep sliding connection with said sleeve, means for adjusting said sleeve to .change the position of said sweep, and electrode holders .supported by said sweep.

2. An arc lamp comprising a bracket, a sweep movably mounted on said bracket, upper and lower electrode holders carried by said sweep, said upper electrode holder comprising anarm carried by said sweep, a block, links suspending said block from said arm, a clamp for the electrode pivotally mounted in said block, means for adjusting said clamp about the pivot and means for laterally swinging said block, 'hereby the upper electrode may be adjusted with relation to the lower.

Thisspecication signed and witnessed this 5th day of September, A. D. 1911.

EARLE M. WOODEN.

Vitnesses:

AMBRosE L. OSHEA, A. M. AUSTIN. 

